Put the board on "watch"

To the mods:

Since many people consider there to be too much clutter on the board, why dont you "put the board on watch"? In other words, enable that option where you must approve every topic and/or post before it is posted.

It might be tedious, and threads would reach the board slower, but it would work to temporarily clean the board. And also you might just be able to do it with the GD board and not the others.